Abby was stabbed in the stomach by a needle and there's a needle in this poppet's stomach.
She probably stabbed herself!
I have nothing to do with this, that poppet was a gift
Cheever goes to the Proctor's house to look for a poppet. He knows that Abby has been stabbed in the stomach by a needle and as he is finds the poppet he also sees a needle. The needle was placed when Mary was sewing the poppet. Abigail see her placing the needle then tells Mary to give it to Elizabeth. Then Abby stabs her self with a needle and blames it on Elizabeth so she gets in trouble for preforming witchcraft. It looks like Abby is doing this so she can be with John Proctor.